Goal:
  
  ============================
   (∀ (A : Type) (n : nat), skipn n [] = [])


DEBUG:Going to execute:
intros A [| n]

Goals:
    A : Type
  ============================
   (skipn 0 [] = [])

    A : Type  n : nat
  ============================
   (skipn (S n) [] = [])


DEBUG:Going to execute:
reflexivity

Goals:
    A : Type
  ============================
   (skipn 0 [] = [])

    A : Type  n : nat
  ============================
   (skipn (S n) [] = [])


DEBUG:Going to execute:
fun => <coq-core.plugins.ltac::reflexivity@0>